Global Patent Index - EP 3836733 A4

EP 3836733 A4 20220706 - USER TERMINAL AND WIRELESS COMMUNICATION METHOD

Title (en)

USER TERMINAL AND WIRELESS COMMUNICATION METHOD

Title (de)

BENUTZERENDGERÄT UND DRAHTLOSKOMMUNIKATIONSVERFAHREN

Title (fr)

TERMINAL UTILISATEUR ET PROCÉDÉ DE COMMUNICATION SANS FIL

Publication

EP 3836733 A4 20220706 (EN)

Application

EP 18929018 A 20180809

Priority

JP 2018029993 W 20180809

Abstract (en)

[origin: EP3836733A1] To properly control communication even when a BFR procedure is performed in multiple cells, a user terminal according to one aspect of the present disclosure includes a transmitting section that transmits a beam recovery request (Beam Failure Recovery reQuest (BFRQ)) on a cell in which a radio link failure has occurred, using a random access channel, and a control section that performs transmission of the random access channel in a given cell configured in advance or the cell in which the radio link failure has occurred.

IPC 8 full level

H04W 76/19 (2018.01); H04B 7/06 (2006.01); H04W 16/28 (2009.01); H04W 74/08 (2009.01)

CPC (source: EP US)

H04B 7/0695 (2013.01 - EP US); H04L 27/26025 (2021.01 - US); H04W 24/10 (2013.01 - US); H04W 74/0833 (2013.01 - US); H04W 76/19 (2018.01 - US); H04W 74/004 (2013.01 - EP); H04W 74/0833 (2013.01 - EP); H04W 76/15 (2018.01 - EP)

Citation (search report)

  • [T] EP 3824566 A1 20210526 - QUALCOMM INC [US]
  • [T] HUAWEI ET AL: "non-contention based random access for beam failure recovery in CA", vol. RAN WG2, no. Vancouver, Canada; 20180122 - 20180126, 12 January 2018 (2018-01-12), XP051386545, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg%5Fran/WG2%5FRL2/TSGR2%5FAHs/2018%5F01%5FNR/Docs/> [retrieved on 20180112]
  • [T] LENOVO ET AL: "Discussion of beam failure recovery for carrier aggregation", vol. RAN WG1, no. Sanya, China; 20180416 - 20180420, 6 April 2018 (2018-04-06), XP051413160, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg%5Fran/WG1%5FRL1/TSGR1%5F92b/Docs/> [retrieved on 20180406]
  • See references of WO 2020031350A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 3836733 A1 20210616; EP 3836733 A4 20220706; CN 112840737 A 20210525; JP 7284174 B2 20230530; JP WO2020031350 A1 20210812; US 2021314049 A1 20211007; WO 2020031350 A1 20200213

DOCDB simple family (application)

EP 18929018 A 20180809; CN 201880098541 A 20180809; JP 2018029993 W 20180809; JP 2020535446 A 20180809; US 201817266756 A 20180809